Harrow



(No Model.)

G. MELSON & R. H. HARPER.

HARROW.

No. 386,598. Patented July 24, 1888.

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UNITED STATES PATENT Eric's.

GEORGE MELSON AND ROBERT HENRY HARPER, OF EUGENE CITY, OREGON.

HARROW.

SPECIFICATION forming part of Letters Patent No. 886,598, dated July 24, 1888.

Application filed March 5, 1888. Serial No. 266,270. (No model.)

To all whom it may concern.-

Be it known that we, GEORGE MELsoN and ROBERT HENRY HARPER, of Eugene City, in the county of Lane and State of Oregon, have invented a new and useful Improvement in Harrows, of which the following is a specification.

This invention pertains to certain improvements in barrows, having for its object to promote lightness, strength, durability, and efficiency; and it consists of the construction and assemblage of the constituent parts of the barrow-franie or beams, together with the construction of the headed ends of the teeth shanks or standards, as also of the individual construction of the teeth, substantially as hereinafter more fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a general plan view of our improved harrow. Fig. 2 IS an enlarged detailed plan view of the same, portions being broken away; and Fig. 3 1s a perspective view of one of the harrowteeth.

In the embodiment of our invention we employ a number of harrow-seetions, A A, connected by suitable hooks and eyes or links, a a, to a common draft-bar, b, having means for the application centrally thereto of the draft, as usual. Each harrow-section consists of a series of cdgewisc-disposed platelike bars or beams, B B, each plate-like bar or beam running the entire length of the section and having its ends passed through a front and a rear end piece, a a Each plate-like bar or beam B is also formed in a zigzag-like man her, or into a series of short angular or diagonal portions or arms, B B, each diagonal or angular portion connecting with its fellow by a straight portion, 13". These beams or bars B are put together so that the angular portions or arms B will stand opposite to each other, the union thus formed producing an intermediate diamond-shaped space, while the straight portions B of opposite beams or bars will stand parallel to each other, and between which are left spaces for the reception of the tooth shanks or standards.

It will be noticed that the angle of deflection of each successive diagonal portion or arm 13 of the outside righthaud beam and each alternate beam or bar 13 varies or diminishes passing rearward until the third angle is formed, or next to the last tooth is reached, while the angle of deflection of the rearmost or last diagonal portion or arm is about the same as that of the first or foremost diagonal portion, whereby no one tooth travels in the same path of the other, and the harrowing or pulverizing of the ground is thoroughly and uniformly effected. This order or arrange ment of the teeth is observed throughout. The beams or bars B disposed intermediately of the outside right-hand beam or bar, B, and each alternate beam or bar are adapted to unite with the latter to effect the aforcsaidarrangement or disposition of the teeth.

The only additional or adj unctive parts used in connection. with the beams or bars 13 are two side bars, B B bolted to and uniting with the opposite or outside beams or bars in securing a number of the teeth in place, and extending from the front end bar, a, to theneXt to the last teeth.

0 O are the barrow-teeth, which are disposed and held at certain intervals apart throughout the barrow-sections, and, as above intimated, between the straight portions B of the bars or beams 13 B, as presently fully set forth. Each tooth proper is curved in the direction of its length from its lower end rearward upon its lower or rearsidc, as also upon its forward side, and tapered at its lower end to a narrow terminal or point, while it is formed centrally at its front side in the direction of its length with a cutting-edge, and flared upon each side thereof rearward, as Shown.

This'construction enables the tooth to readily enter and move through the soil,even in sticky soil, without clogging, while any stray roots of grass or trash will be permitted to pass up Ward and drop behind the tooth. The shank of the tooth is formed with a flat oblong por tion or web, O, having passing centrally through it an aperture,c,and which is received in the space between the straight portions 13 of the bars or beams B. The lower end of the flat oblong portion or web of the tooth-shank is formed with a shoulder, c, and its upper end with a shoulder or head, 0 which shoulders embrace the bars or beams B attheir straight portions B B upon their upper and lower edges, while through the aperture 0 in the fiat portion or web 0 of the tooth-shank and coincident apertures in the bars or beams B B is passed a bolt, D. This method of fastening effects not only the securing in position of the teeth, but also the bracing and securing together of the beams or bars 13, whereby lightness, strength, and durability are promoted.

Having thus described our invention, what we claim as new is 1. The barrow comprising the series of zig zag beams, the angle of deflection of the successive diagonal or angular arms or portions of which varies in the direction of their lengths and extendsinoppositedireetions,whichbeams are connected together, the shorter portions or arms of one beam bracing the longer arms or portions of the adjoining beam, substanor angular arms or portions of which variesin the direction of their lengths and extends in opposite directions,which beams are connected together, with the shorter portions or arms of one beam bracing the longer arms or portionsofthe adj oiningbeam,substantial ly as set forth 3. The barrow comprising the series of thin plate-like zigzag beams having apertured straight parallel portions intermediately of their angular or diagonal portions or arms, the angle of deflection of the successive diagonal or angular arms of which varies in the direction of their lengths and extends in opposite directions, which beams areconnected together, with the shorter portions or arms of one beam bracing the longer arms or portions of the adjoining beam,and theteeth,the shanks of which are formed with an apertured web provided above and below the aperture with shoulders, substantially as set forth.

GEORGE MELSON. ROBERT HENRY HARPER. \Vitnesses:

GEO. A. DORRIS, JNo. HODSON. 

